The formula is a special combination of herbs that are "adaptogens". Their is a long tradition of their use as restorative, tonic, and rejuvenating. Plants deal with stressors too (bugs, microbes, heat, cold, drought, etc.), although we rarely think about it...
The herbs in this formula are chosen for 3 reasons:
Their Energetics - mostly cooling and drying, helps to reduce inflammation, soothing to irritated tissues, and helps to bring appropriate moisture levels (of the sinuses) back into balance
Their Organ Affinity - primarily the upper respiratory system - eyes, throat, nose, and sinuses
Actions - expectorant, diaphoretic, astringent/demulcent, and stimulating
A few years back, one of our employees who had been with us for a while, was filling bottles for our retail space. Being a small business, we mix, fill, label, and shrink wrap all of our herbs by hand. Anyone who has worked in production knows how easy it is to fall into auto-pilot mode...